Bash script together with expect

问题:

I do have a script which copies files from one box to another.

#!/usr/bin/expect -f


spawn scp "user@host:/opt/xxx/201409080500.tar.bz2" /tmp/dantmp
expect {....
     -re ".*es.*no.*"
     {
         exp_send "yes\r"
         exp_continue
     }
     -re ".*sword.*"
     {
         exp_send "Pa55word\r"
     }
 }
interact

Script does a job, but unfortunatelly I am not allowed to use any default bash commands inside. For example like echo etc, I assume reason is that I haven't imported #!/usr/bin/env bash. But if I do import it or use bash together with expect script is not working at all.

Could you please help me to structure it so I can use both cmd from bash as well as expected? Thanks for any help!